Juwel Bioflow M Filter Riser

18mm Riser to bring the Bioflow M filter back to its original height if you have taken it off the glass.

We removed ours to clean behind it then it just kept sinking in the gravel and ending up submerged, so measured the required gap to bring it back up to standard height and made this stand.

Slots in to the bottom spacer already on the filter housing.

Ideally print with 5 walls so it is effectively 100% infill